89890-55-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89890-55-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,8,9 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 89890-55:
(7*8)+(6*9)+(5*8)+(4*9)+(3*0)+(2*5)+(1*5)=201
201 % 10 = 1
So 89890-55-1 is a valid CAS Registry Number.